Premium 7-Piece TiCN Coated Spiral Flute Tap Set | DIN 371/376 HSS-E M35 | Professional Blind Hole Tapping Kit

1. Technical Specifications (M3 - M12 Range)

2. Customer Challenges & Engineered Solutions

• Challenge: Chip Packing & Tap Breakage in Blind Holes

  • Solution: The high-helix spiral flute acts like a drill bit, lifting chips continuously out of the hole. This prevents chip accumulation at the bottom, which is the #1 cause of tap breakage.

• Challenge: Tool Wear in Hard/Abrasive Materials

  • Solution: The TiCN (Titanium Carbonitride) coating provides a surface hardness of approx. 3,000 HV. This is significantly harder than TiN, allowing the tool to withstand abrasive wear in stainless steel and cast iron.

• Challenge: Friction and Heat Generation

  • Solution: TiCN has a very low coefficient of friction. This reduces cutting torque and heat buildup, allowing for higher cutting speeds (Vc) and longer tool life in CNC production.

• Challenge: Inaccurate Thread Fit

  • Solution: Calibrated to 6H (ISO 2) tolerance class, ensuring every thread meets strict international precision standards for a perfect fastener fit.

3. Material & Application Guide

This TiCN series is optimized for high-performance machining in:

• Stainless Steel: 304, 316, and duplex grades.

• Alloy Steels: High-tensile steels up to $1200text{ N/mm}^2$.

• Aluminum Alloys: Particularly those with high silicon content where standard taps often "gall" or stick.

• Target Industries: Automotive engine components, Aerospace fasteners, and Medical device manufacturing.

4. Key Product Advantages

• Premium HSS-E (M35) Base: Contains 5% Cobalt for extreme red-hardness and toughness.

• Fully Ground Geometry: Micro-polished flutes ensure smooth chip flow and a mirror-like thread finish.

• Rugged Industrial Case: Presented in a heavy-duty metal index case (as shown in the image) for professional organization and protection.

5. FAQ (Technical Support)

Q: Why does this set mix DIN 371 and DIN 376?

A: This is for your benefit. DIN 371 (M3-M10) uses a reinforced shank for maximum rigidity in smaller sizes. DIN 376 (M12) uses a reduced shank, allowing the tap to pass through the hole for deeper threading applications.

Q: Can I use TiCN taps with manual tap wrenches?

A: While possible, these are high-performance tools optimized for CNC and machine tapping. The TiCN coating performs best at the stable, higher speeds provided by machine spindles.

Q: What is the benefit of TiCN over the standard Gold TiN coating?

A: TiCN is harder and more wear-resistant. While TiN is a great general-purpose coating, TiCN is superior for tough, gummy, or abrasive materials where TiN might wear off prematurely.